The doublerockermechanism (with back rocker driving) is used to luffing operation of floating crane. It has high productivity and transfer flexibility.
这种双摇杆变幅机构可用于浮式起重机的带载变幅作业，具有高的生产率和作业灵活性。
2
On the basis of kinematics and geometry principle, the mathematical model for the doublerocker arm mechanism was established.
用这种方法设计的双摇杆导引机构能满足平管机械对较大直线位移的运动要求 。
3
This paper studies the limit place about double-rockermechanism. Verification has been carried out on this method with concrete examples.